Question

Explain how pressure helps in doing the following task-To take blood from a patient from a blood test

Answer 1

Answer:

Explanation: In the particular task of taking a blood sample, the pressure difference between the blood flow levels matters a lot. This is because like anything else, blood too flows from a high pressure environment to low pressure.

Now when one takes a syringe to the vein in order to take a sample, the blood flows into the collecting space without any hindrance due to the difference in pressure levels.